›› Physical and chemical properties of Thulium

Atomic Number:69
Element Symbol:Tm
Element Name:Thulium
Atomic Weight:168.93421
Group Name:Lanthanoid
Period Number:6 (lanthanoid)
Ground State Configuration:[Xe] 4f13 6s2
Ground State Level:2Fo7/2
Standard State:Solid
Bond Length:344.7
Atomic Radius Empirical:175
Atomic Radius Calculated:222
Electron Affinity:50
First Ionization Energy:596.7
Pauling Electronegativity:1.25
Allred Rochow Electronegativity:1.11
Density Of Solid:9321
Molar Volume:19.1
Youngs Modulus:74
Rigidity Modulus:31
Bulk Modulus:45
Poissons Ratio:0.21
Brinell Hardness:471
Vickers Hardness:520
Electrical Resistivity:70
Melting Point:1545
Boiling Point:1950
Thermal Conductivity:17
Coefficient Of Linear Expansion:13.3
Enthalpy Of Fusion:16.8
Enthalpy Of Vaporization:250
Enthalpy Of Atmization:232
Most Common Oxidation Numbers:3
Color:Silvery white
Discovered By:Per Theodore Cleve
Discovered At:Sweden
Discovered When:1879
Origin Of Name:Named after Thule, an ancient name for Scandinavia

Calculate the molecular weight of Thulium or molecular weight Tm.

Also see the full list of chemical elements and atomic weights.

››Compounds that contain Thulium

Thulium(II) Bromide  TmBr2
Thulium(III) Bromide  TmBr3
Thulium(II) Chloride  TmCl2
Thulium(II) Chloride Heptahydrate  TmCl2.7H2O
Thulium(III) Chloride  TmCl3
Thulium(III) Fluoride  TmF3
Thulium(II) Iodide  TmI2
Thulium(III) Iodide  TmI3
Thulium(II) Niobate  Tm(NbO3)2
Thulium(III) Oxide  Tm2O3
Thulium(III) Sulfide  Tm2S3